url-shortener

A simple demo written in Golang to shorten URL and redirect

.
├── go.mod
├── go.sum
├── handler
│   └── handlers.go
├── main.go
├── shortener
│   ├── shorturl_generator.go
│   └── shorturl_generator_test.go
└── store
    ├── store_service.go
    └── store_service_test.go

background

These small utilities services are quite helpful in reducing noise when sharing links. You can input a very long URL address and it can output a much shorter version of it much easier to share around.

setup envs

• go 1.17
• redis 3.2

how it works

• storage layer
• short link generator
  • using SHA256 to hash the initial inputs
  • using BASE58 binary to text encoding
• forwarding
  • get the creation request body, parse it and extract the initial long url and userId
  • generate our shortened hash using shortener.GenerateShortLink()
  • store the mapping of output hash/shortUrl with the initial long url using store.SaveUrlMapping()

reference

Let's build a URL shortener in Go - EDDY WANNY M